Home- death note fanfic (LxOC)

Chapter 1

"Very well then Watari,thank you". L let go of the button and leaned back against the chair,sighing. He glanced at the girl beside him. Her head snuggled into the long sleeves of her blue hoodie. Probably the only hoodie she'll ever put on.
  "M, go to bed you look tired" he said eating a piece from his cake. She shook her head from left to right. Straightening her position,she stretched her arms and leaned against her chair.
  Ever since this whole Kira thing started L hasn't gotten any sleep at all. He would be up all night figuring out how he kills. The black circles around his eyes just showed how much he slept.
  She didn't even need to ask how he kept awake all night. All the boy's ever eaten is just sweets. He always has a bowl filled with them next to him. Or two,or three. And cake too.
  She too loved sweets but she didn't eat them all the time. Sometimes she wonders how in the world has he never been admitted to the hospital before.
  She took a sip from her cup of coffee and looked back at the monitors.  Using the elastic around her right hand she tied her messy long brown hair into a ponytail. There were a few pink and blue strands strands in her hair. L never understood why she wanted such colours in her hair but she said it added a little "fun" in her life.
  "Are you sure you don't want the police to know that you're working on the case as well?" L asks,finishing his cake.
  'How did he finish it that fast?' She asks herself. "Yeah, they'll know when they demand to meet you" she said still looking at the monitor of her laptop.
  "How do you know they would demand to see me?" The boy asks hopping of his chair to get another piece of cake.
  "Well now you're working with them but you're not showing yourself to them. Sooner or later they're gonna wonder why and they'll find it hard to trust you" she explains looking at him,grinning.
  L took a piece of candy from the bowl on his right and unwrapped it, placing it in his mouth.
  "I bet 5 of your macarons that theory is true" she suddenly said putting out five fingers.
"That's too much don't you think?" He replies. He probably just didn't want to give any to her.
  "Says you" she said. She looked at L's monitor and saw a picture of a young college student. His hair was brown and so were his eyes. She thought that he looked like someone that always got good grades. She read the name out loud.
  "Yagami..light?" She looked from the monitor to L. His eyes focused on the screen. "Isn't that the chief's son?" She asks looking at the brown haired boy. Her eyes slightly widened in realization.
"Is that..." "our main suspect" L continued eyes still fixed on the screen. 
  She looked at the picture of the boy. Was this boy.. Really Kira? He's only just a college student but still.. There must be something about this kid that made L suspect this boy. We all know he is in japan because of the broadcasting the other day. The girl couldn't help but feel sorry for the chief. If his son really was Kira.. She  didn't even want to think about it.
  "Listen this Kira this is really dangerous. So just in case, we have to use a fake name" L told her still eating his cake.
  The girl used the name that first came to her mind. "Shirayuki" she said quickly. "What's yours?" She asks clicking the 'x' on the right side of the tab exiting the page.
  L was silent.
  "L?" She looked at him. As he was still silent she smiled evilly. "Is it-" her sentence was cut off.
  "Don't" he said quickly pointing a finger at her while typing something.
  "Ryu-ryu!" She exclaimed spinning around in her chair. L once told her that he found the name ryuzaki quite cool. From that day she teased him by calling him "ryu-ryu" which makes L regret his choice until this day. She did stop doing it frequently though.
  As she laughed a beeping sound came from her laptop. She looked at it and her expression changed. She quickly faced her laptop and clicked on a file.
  "What is it?" He asks. With her eyes focused on the screen she didn't reply. He whirled his chair towards her and looked at the screen.
"More criminals are dead" he said placing his cup of super sweet tea on the table. "And they're from different countries too" she said sounding shocked.
  Many questions were running through their heads. Were there Kira's in different countries as well? how many were there? And who is Kira, the person that calls himself god. Who is he? And how does he kill?